I’ve read the certified cerakote class teaches a lot and is very useful. Also get a decent discount, but not wanting to make this into a full fledged business and take over all my free time. So it leaves me wondering if it’s worth it.
I use to enjoy woodwork. I built myself a rustic cooler with a drain really sweet looking and someone wanted so I sold it. Fast forward a yr later and I had built around 80 of them or so. I got really burned out and all my free time went towards building those coolers. My advice is if you want to do it as a side gig but not full time then set a goal to only do X amount a month or whatever. If not it would be easy to get burnt out like I did. Hell I don’t make anything anymore lol.